Marvell Unveils Second-generation Structera X, Industry-first Six-channel CXL 3.2 Memory Expanders for AI Inference
Marvell unveiled second-generation Structera X 3406 and 3506 CXL 3.2 memory expanders, claiming industry-first six-channel DDR4/DDR5 support with PCIe Gen 6 connectivity. The controllers support up to 9TB of DDR4 or 6TB of DDR5 per controller, with inline LZ4 compression delivering up to 2-3x more effective capacity and 40-50% faster time to first token for LLM inference. Ecosystem endorsements came from AMD, Arm, Alibaba, Samsung and SK hynix, underscoring Marvell's hyperscaler co-development position in CXL memory expansion.
Key figures
- Sampling
- Q1 2027
- Host bandwidth
- 256GB/s PCIe6.0 x16
- Memory channels
- 6
- Ttft improvement
- 40-50% faster at equivalent context length
- Compression throughput
- 250GB/s
- Effective capacity gain
- 2-3x
- Channel increase vs prior gen
- 50%
- Max ddr4 capacity per controller
- 9TB
- Max ddr5 capacity per controller
- 6TB
AI analysis
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